Sometimes the immune system overreacts from exposure to a normally harmless substance such as cat hair. Subsequent exposure to this allergen elicits a massive inflammatory response
Because the chemical histamine is the cause of this inflammation, what cell type is most likely behind the problem? A) neutrophils
B) basophils
C) lymphocytes
D) monocytes
B
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An increased heart rate caused by the release of adrenaline from the adrenal glands is an example of _______________________________
A. autocrine signaling B. juxtacrine signaling C. paracrine signaling D. endocrine signaling
How do cyanide and carbon monoxide affect cellular respiration?
What will be an ideal response?
All of the following are tenets of the cell theory that
research with modern microscopes supports EXCEPT that a. all organisms consist of one or more cells. b. the cell is the smallest unit that retains the characteristics of life. c. since the first cell, each new cell is descended from previous cells. d. each cell is composed of products that it manufactures. e. cells may arise spontaneously under certain laboratory conditions.
Many lung ailments are "not curable but treatable." Which of the following conditions is most curable?
Select one: a. advanced lung cancer with metastases b. standard tuberculosis c. asthma d. emphysema e. COPD